initial working version

cmd/root.go

@@ -0,0 +1,46 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"guardianproject.dev/ops/nix-cache-login/internal/config"
+)
+
+var (
+	cfgPath string
+	cfg     *config.Config
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "nix-cache-login",
+	Short: "Authenticate with a Nix binary cache via OIDC",
+	Long: `nix-cache-login authenticates users and servers against a Keycloak OIDC
+provider and writes access tokens to a netrc file so Nix can use them
+when accessing an authenticated binary cache.`,
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+		var err error
+		cfg, err = config.Load(cfgPath)
+		if err != nil {
+			return err
+		}
+		return nil
+	},
+	// Default to login when no subcommand is given
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return loginCmd.RunE(cmd, args)
+	},
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	rootCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "path to config file (default: $XDG_CONFIG_HOME/nix-cache-login/config.toml)")
+}